package cn.song.config;

import cn.song.common.JacksonObjectMapper;
import cn.song.utils.FilePath;
import lombok.extern.slf4j.Slf4j;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
import springfox.documentation.swagger2.annotations.EnableSwagger2;

import java.util.List;

/**
 * WebMvc配置类
 *
 * @author Song~
 * @since 2024-07-20 14:02:12
 */
@Slf4j
@Configuration
@EnableSwagger2
public class WebMvcConfig implements WebMvcConfigurer {

    /**
     * 扩展mvc框架的消息转换器
     *
     * @param converters
     */
    @Override
    public void extendMessageConverters(List<HttpMessageConverter<?>> converters) {
        log.info("扩展消息转换器...");
        // 创建消息转换器对象
        MappingJackson2HttpMessageConverter messageConverter = new MappingJackson2HttpMessageConverter();
        // 设置对象转换器，底层使用Jackson将Java对象转为json
        messageConverter.setObjectMapper(new JacksonObjectMapper());
        // 将上面的消息转换器对象追加到mvc框架的转换器集合中
        converters.add(0, messageConverter);
    }

    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
        // 自定义路径mypic，  addResourceLocations指定访问资源所在目录
        registry.addResourceHandler(FilePath.XIANGDUI + "**").addResourceLocations("file:" + FilePath.JUEDUI);
        // 自定义路径webjars访问，addResourceLocations映射该路径下的资源，resourceChain资源链
        // registry.addResourceHandler("/webjars/**").addResourceLocations("classpath:/META-INF/resources/webjars/").resourceChain(true);
    }

}

